Transformer-cooling system



c. LE G. FORTESCUE TRANSFORMER 000mm; SYSTEM Dec. 1, 1925' Filed Aug.17, 1920 INVENTOR izrie leflfimzza 7 ATT'ORNEY v Patented Dec. 1, 1925.

UNITED STATES PATENT, OFFICE.

CHARLES LE G. FORTESCUE, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOB TO WEST-INGHOUSE ELECTRIC 6'6 MANUFACTURING COMPANY, A CORPORATION OF PENN-SYLVAN IA.

TRANSFORMER-COOLING SYSTEM.

application filed August 17, 1920. Serial No. 404,205.

To all whom it may concern:

Be it known that I, CHARLES LE G. Fon- TEsoUs, a subject of the King ofGreat Britain, and a resident of Pittsburgh. in the county of Alleghenyand State of Pennsylvania, have invented a new and useful Improvement inTransformer-Cooliug Systems, of which the following is a specification.

My invention relates to transformers and it has particular relation toapparatus of the character designated in which a cooling medium isdirected over the heated portions thereof.

One of the objects of my invention is to provide a transformer of thecharacter designated wherein the coils are so spaced, one from theother, as to provide passages therebetween and by so arranging bailleplates as to co-operate with the passages in di recting the flow of acooling medium therethrough.

In theaccompanying drawings:

Figure 1 is a vertical longitudinal sectional view through a transformercasing, one set of coils being'shown in elevation and the other insection. V

Fig. 2 is a horizontal sectional view 011 line IIII of Fig. 1.

The following is a description of the said drawings and of the preferredconstruction illustrated therein.

The numeral 1 indicates a transformer casing of any preferredconstruction and provided with a cover or cap plate 2. \Vithin thecasing is disposed a rectangular core member 3, preferably of cruciformcrosssection, and having concentrically arranged primary and secondarycoils 4 and 5 inductively mounted upon the legs thereof.

The primary coils 4 are preferably of cylindrical form and extendsubstantially the entire length of the legs of the core memher and areso spaced therefrom as to form spaces 6 for the circulation of a coolingmedium therebetween. The secondary coils 5, preferably comprise aplurality of superposed separate pancake-coil members so spaced one fromanother, by means of radially extending spacing blocks 7 of insulatingmaterial, as to form a plurality of radial ducts8. Cylindrical barriers9 are disposed between the primary coils 4: and the secondary coils 5and are so spaced therefrom as to form inner and outer spaces 10 and 11,the latter of which communicates with the ducts 8.

Vertically disposed baflle plates '12 are arranged along each side ofthe coils 5 and are so shaped as to conform to the exterior the spaces 6from the central chamber 13.

The bottom of the casing'is provided with a central aperture 17 whichcommunicates with the central chamber 13 and through which a coolingmedium may be introduced rection of the arrows in Fig.1, through theducts 8, and, spirally through the spaces 6, into the outer chambers 14and from there it may escape into the atmosphere through apertures 18 inthe cover 2 of the transformer.

By this arrangement, the supply of cooling medium is: divided into twodistinct currents each of which is again sub-divided into separatecurrents which do not come into contact with each other until afterpassing over and between the heated portions of the coils, thus alwayspresenting a relatively cool current to the different parts. i

I claim as my invention:

1. A transformer comprising a casing having a plurality of compartmentstherein, one of which is centrally disposed relative to the others,coils mounted within said casing and extending into adjacentcompartments, the coils being disposed to form passageways forpermitting circulation of a cooling medium between said coils from thecentral compartment in divergent directions to adjacent compartments.

2. A transformer comprising a casing having" a plurality of compartmentstherein, one of which is centrally disposed relative to theothers, coilsmounted within said casing and extending into adjacent compart- *"intothe interior of the transformer and from which it may pass radially, inthe diments, spacing members arranged between said coils and formingpassageways therewith for ermitting the passage of a cooling mediumtween said 00118 from the central compartment in divergent directions toadjacent compartments.

3. A transformer comprising a casing having a plurality of coils mountedtherein, vertically disposed baflle plates so arranged adjacent saidcoils as to form a plurality of alined compartments, an inlet opening inan 7 intermediate compartment and outlet openin in adjacentcompartments, and a plura ity of spacing members disposed between saidcoils and forming passageways therewith whereby communication isestablished to permit a circulation of a cooling medium in oppositedirections between said coils.

4. A transformer comprising a casing provided with a plurality ofbaflies to form a plurality of compartments, a plurality of coils soarranged .within said casing as to extend at right angles to saidbaflies into adjacent compartments, passages between said coils, and t ebafiles and coils forming passageways whereby a cooling medium may beadmitted to an intermediate compartment and allowed to pass out of theothers of said compartments to efi'ect a circulation around and betweensaid coils.

5. A transformer comprising a casing having a plurality of com artmentstherein, one of which is central y disposed relative to the others, andgrou s of coils mounted within said casing, eac coil group extendingfrom the central compartment to one of the other compartments, the coilsof each group being disposed to form passageways for permittingcirculation of a cooling medium therebetween from the centralcompartment to an adjacent compartment.

In testimony whereof, I have hereunto subscribed my name this 30th dayof July 1920.

CHARLES LE G. FORTESCUE.

